org.lastaflute.di.util.LdiCalendarConversionUtil Maven / Gradle / Ivy

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DI Container for LastaFlute, super forked from Seasar as Java8

There is a newer version: 2.0.0

/*
 * Copyright 2015-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.lastaflute.di.util;

import java.util.Calendar;

/**
 * @author modified by jflute (originated in Seasar)
 */
public class LdiCalendarConversionUtil {

    protected LdiCalendarConversionUtil() {
    }

    /**
     * @param o
     * @return {@link Calendar}
     */
    public static Calendar toCalendar(Object o) {
        return toCalendar(o, null);
    }

    /**
     * @param o
     * @param pattern
     * @return {@link Calendar}
     */
    public static Calendar toCalendar(Object o, String pattern) {
        if (o instanceof Calendar) {
            return (Calendar) o;
        }
        java.util.Date date = LdiDateConversionUtil.toDate(o, pattern);
        if (date != null) {
            Calendar cal = Calendar.getInstance();
            cal.setTime(date);
            return cal;
        }
        return null;
    }

    /**
     * @param calendar
     *            {@link Calendar}
     * @return
     */
    public static Calendar localize(Calendar calendar) {
        if (calendar == null) {
            throw new NullPointerException("calendar");
        }
        Calendar localCalendar = Calendar.getInstance();
        localCalendar.setTimeInMillis(calendar.getTimeInMillis());
        return localCalendar;
    }
}